Binding means for paper sheets



Feb 1933. w. c. BOHMERT BINDING MEANS FOR PAPER SHEETS Filed Sept. 19,1930 2 Sheets-Sheet l FIG, 2.

INVENTOR BY \LMQ Va WM:

TTORNEY Feb 14, 1933. w c BOHMERT 1,897,038

BINDING MEANS FOR PAPER SHEETS Filed Sept, 19, 1930 2 Sheets-Sheet 2-iNVENTOR BY wimiom. NW WW ATTORNEY Patented Feb. 14, 1933 WILLIAM G.BOHMERT, MAMARONECK, NEW YORK BINDING MEANS FOR PAPER SHEETS Applicationfiled September 19, 1930. Serial No. 483,035.

This invention relates to means for binding sheets of paper in pad orassembled form, and more especially to binding means especially adaptedfor manifolding assembly.

The invention has for its objects, among others, first, to provide ameans for binding together loose sheets of paper that both securelyholds the sheets in the assembled form and also permits of the faciletearing of the sheets from the binding means; second, to provide asecure binding means for paper sheets with a simple and economical manufacturing operation; third, to provide a binding means that is bothdurable and flexible; fourth, to provide a binding means equally welladapted for securing together a few or a large number of sheets; fifth,to provide a binding means comprising an adhesive with far greateradhesion to the sheets of the assembly; sixth, to provide a manifoldingassembly especially adapted to the operations of manifolding; andseventh, to provide a manifolding assembly of more economical cost butretaining the security of the binding means. Other objects may appear asthe description proceeds.

Reference is made to the drawings which are hereby made a part of thisspecification, in which Figure 1 is a plan view of a manifoldingassembly,

Figure 2 is a greatly magnified plan view of the upper right corner anda part of the edge as shown in Figure 1,

Figure 3 is a view similar to that of Figure 2 but with the top sheetsturned back on the line a-a and the second or duplicating sheet turnedback on the line bb, and

Figure 4: is an end view of the upper edge also greatly magnifiedshowing the paper sheet assembly before the fluid adhesive is applied tothe edge.

Like parts are designated by the same numerals throughout the drawingsin which I illustrate my invention applied to a manifolding assemblycomprising original sheets 1, which are shown blank but which may beruled or printed for any form desired, having carbon sheets 2 interposedbetween the originalsheets 1 and 3 and so forth in the usual manner. Asseen in Figures 3 and 4 the second original sheet is designated by thenumeral 3 for the sake of clarity and to avoid confusion. The sheets 1and 3 have the upper edge in the form of a straight line interrupted bya series of indentations or scaliops or concavities 4. Theseindentations may be in a plurality of forms or shapes. The interposedcarbon or duplicating sheets of thin porous paper however have thecorresponding edges straight. The prior practice in binding a pad orassembly of aper sheets, as is well known to those skil ed in the art,has been to have all the edges assembled in the same plane. On the otherhand in the application of my invention the upper edges as viewed fromthe end present the construction as shown in Figure 4, namely a seriesof indentations in the alternate sheets, so that when the liquidadhesive is applied to the end with a brush the adhesive not aloneadheres to the straight edges terminating in the plane, but alsopenetrates the indentations and adheres also to the edges of theindentations, which obviously increase the total linear dimension of theedges of the sheets that have the indentations, and also to the parts ofthe surfaces of the carbon or duplicating sheets exposed by theindentations in the overlying and underlying sheets. The improvedconstruction of my invention therefore While requiring only the usualmanufacturing operation in binding sheets of paper of brushing the endwith a liquid adhesive provides a binding means for the assembly of fargreater binding effectiveness thereby eliminating the ioosening ofsheets now commonly occurring in assemblies where the binding adhesivealone is used, and obtaining all the advantages in practice of the farmore expensive manufacturing operation of stitching. A study of the endconstruction as shown in Figure 4 clearly indicates the form of theliquid ad hesive when dried into a binding wall of greatly increasedstrength and resistance to breaking or mutilation, particularly when thewall is passed under the rolls and over a curved typewriter platen. Inpreparing the carbon or duplicating sheets 2 for this manifoldingconstruction I leave a narrow strip at the binding edges of the sheetsunimpre ated with carbon or duplicating ink where y the porous paperused for this purpose is left with all its absorption properties open topermeation by the liquid adhesive thereby increasing the binding effecton the manifolding assembly.

At the lower right hand corner the sheets 1 and 3 are cutaway andsimilarly at the upper left hand corner the carbon sheets 2 are cutaway.This cutaway construction permits the gras ing of the lower rlght handcorners of all t e carbon sheets 2 by the thumb and forefinger of theright hand and also permits simultaneously the grasping of all theoriginal sheets 1 and 3 at the upper left hand cornerby the thumb andforefinger of the left hand, after filling-in operation is completed onthe machine, and thereupon the pulling of the hands apart simultaneouslypulls out and separates all of the carbon or duplicating sheets 2. Thisoperation leaves all of the sheets 1 and 3 securely bound at the upperedge. The perforated line 8 permits the tearing off of the lowerportions of the sheets 1 and 3, leaving the upper po rtions of sheets 1and 3 securely bound in pad or assembled form at the upper edge by meansof the adhesive 5.

The securin of pa er sheets together at the correspon ing en s with theedges terminating in a plane surface by means of liquid adhesive a pliedwith a brush 1s a common form of inding means for sheets of paper inassembled form, but when a pad or assembly of sheets of paper so treatedis handled or tossed about the sheets frequently become separated, andthis mutilation of the assembly form occurs especially when such an'assembly of sheets so bound is passed under the rolls of a typewriterand over the curved surface of a typewriter platen. The alternative tohaving the assembly of sheets broken up and some of the sheetsunwittingly loosened is to stitch the assembly together at the edge; butsuch stitching adds sharply to the manufacturing cost and therefore is acheck and preventative of wide economic use of stitching in suchassemblies. By the construction of my present invention, on the theentire assembly is passed through the t ewriter I rolls binding meansforemost without injury or mutilation. It is apparent that while I haveillustrated an application of my invention to manifolding assemblies myinvention is of general application wherever it is desired to bindtogether an assem-' bly of sheetsat the edge, therefore I do not chooseto limit myself except as in the appended claims.

I claim:

1. A pad comprising a plurality of sheets of paper, alternate sheetshaving the ends to be ound straight in outline, the other sheets havingparts of the correspondin ends set back cm the plane of the ends 0 theother alternate sheets, binding adhesive applied to all the said ends,the construction being such that the binding adhesive adheres not aloneto the ends of the straight-edge sheets but also to parts of thesurfaces thereof.

2. A pad comprising a plurality of sheets of paper, alternate sheetshaving corresponding ends straight in outline and in the same plane, theother sheets having a series of indentations on the corresponding ends,the said ends being covered with binding adhesive, the constructionbeing such that the binding adhesive adheres not alone to the edges ofthe straight-edge sheets but also to the parts of the surfaces thereofcoextensive with the areas of the indentations of the edges of theadjacent sheets.

3. A pad or assembly of sheets of paper in which alternate sheets havethe corres 0nding ends irregular in outline, and ad acent interposedsheets having the corresponding ends straight-edged, binding adhesiveapplied to all the said ends, the construction being such that theadhesive adheres not alone to the ends of the alternate sheets but alsoto the surfaces of theadj acent sheets.

Signed at New York city in the county of New York and State of New Yorkthis eighteenth day of September A. D 1930.

WILLIAM C. BOHMERT.

other hand, in which alternate sheets of paper in the assembly are notalone bound by adhesive at the edge but also on both faces of saidsheets adjacent the edge and the linear dimension of the edges of theother sheets is materially increased by the same cutaway indentationsthat permit of surface adhesion of the binding adhesive, therebyincreasing the edge adhesion of these sheets, the pad or assembly ofsheets is held in assembly secure against accidental separation of anyor part of the sheets and the adhesive wall is rendered so firm by thereinforcing projections within the edge of the assembly that

